How special is your Aronszajn tree?
Logic
2007-05-23 v1
Abstract
The following is consistent: There is a stationary set S such that every Aronszajn tree is S-*-special and there is an Aronszajn tree T such that for every unbounded E we have T is not E-special. This answers a question of Shelah (Proper and Improper Forcing, IX.4.9(5).
Cite
@article{arxiv.math/0312445,
title = {How special is your Aronszajn tree?},
author = {Chaz Schlindwein},
journal= {arXiv preprint arXiv:math/0312445},
year = {2007}
}